Jackson e



- (No Model.)

J. R. BAKER.

- OAR AXLE BEARING.

No. 259,352. Patented June 13, 1882.

WITNESSES: INVBNTOR BY m, I

ATTORNEY hugmphl'. w nnnn nnnnnnn c.

JACKSON R. BAKER, OF JERSEY CITY, NEW JERSEY.

CAR-AXLE BEARING.

SPECIFICATION forming part of Letters Patent No. 259,352, dated June 13, 1882.

Application filed July 30,1881. (No model.) i

the danger of unequal wear between the axle 55 and its bearing is rendered impossible.

In constructing my bearing Itake a strip,

A, of ordinary soft sheet-lead of a thickness of about the sixteenth of an inch, or less. This strip of soft lead is laid in the bearing B in the 6,0 direction of its length, and it is soldered to the '1 hearing, as at a but the leaden strip does not l 1 completely line the inner surface of the hearting, but covers only what may be termed the 1,?cr0wn of the bearing, leaving the bearing 65 gon either side, I), of the leaden strip uncovered. 1 Before placing this leallen strip into the bearin g it is perforated with holes O,for the purpose ,of forming chambers to hold the oil or other glubricant, which is supplied to the bearing in {lhe usual manner, each hole forming a small ure 1 represents a perspective view of my imlreservoir of oil, which it gives out freely as the proved bearing, and Fig. 2 a crosss'ection of axle rotates, to be again-supplied by the rota- Same' f' tion of the axle. v

Similar letters of referenceindicatelike parts\ I am aware that perforated copper or brassig, in the two figures. interior linings have been employed in bear- The well-known heating of car-axles in their in gs, the copper or brass, however, completely bearings is particularly liable to occur when a covering the surface of the-bearing 5 and I am the bearings are new, and is due to the fact; also aware that uuperforated sheet-lead has that the bearing and axle have not yet been? been employed forlining bearings; but such To all whom it may concern: 7

Be it known that I, JACKSON R. BAKER, of;

Jersey City, in the county of Hudson and State;

of New Jersey, have invented a new and use-, 5 ful Improvement in Gar-Axle Bearings; and

I hereby declare that the following is a full," clear, and exact description of the same, reference being bad to the accompanying drawings, making part of this specification.

This invention is in the nature of an improvement in car-axle bearings.

The invention consists in a bearing for caraxles provided with a strip of perforated lead soldered thereto and extending centrally in the direction of the length of the bearing, as is more particularly described hereinafter.

In the accompanying sheet of drawings, Figbrought to that exact closeness of fit that alone, will permit uniform and steady rotation of the axle in its box or hearing, which is essential to producing the least amount of friction. This uniform and smooth bearin g between the axle and its bearing is ordinarily brought about by the use of the car to which they are attached on the road, when by a slow grinding process the bearing is brought to an accurate fit upon the axle but by this process frequent heating of the axle and its bearin g takes place, and de-F lays ensue. It is the purpose of the present invention to obviate these difficulties by providing the hearing with a strip of yielding metal-such lead-which will at once accommodate itself to any inequalities in the axle or its hearing, at once making aclose and accurate fit between the two, which is maintained until the axle is worn smooth and it and its hearing are truly fitted to one another, the lead gradually wear-5 rngaway as the axle and its bearin gare brought to a uniform fit. By interposing this strip lead between the axle and its bearing not only are the surfaces of the axle and bearing brought to an accurate fit at once, as before stated, but all lost motion between theaxle and its bearby Letters Patent, is

lead linings also completely covered the suryface of the bearing; but to cover entirely the inner surface of the bearing in this way has to some extent been found objectionable, for several reasons not necessary here to mention, and neither the copper nor the brass afford so tgood a substance for the purpose designed as lthe soft sheet-lead. Besides, in the copper f and brass linings before referred to these linings were of considerable thickness, and the perforations were made of particular form by rolling the linings after the perforations were made. I do not therefore claim broadly either "a soft-metal lining for bearing-brasses or linings with perforations formed therein; but

What I do claim as new, and desire to secure brass for axles, in combination ,1 A bearingthe crown of the bearin g, the bearing on each side b of the leaden strip being left uncovered, substantially as and for the purpose described.

JACKSON R. BAKER.

Witnesses:

JAMES E. RYDER,

in g is prevented and a saving effected. Besides,

H. L. WATTENBERG.

'with a strip of perforated soft lead soldered thereto and interposed between the axle and 109,, 

